Food update, Protein isolate added

Food available in game have been revised and updated, and Protein isolate added.
More effects, less cost and better balancing, surely a good news for players :)

Meat (beef and chicken) now have a strength bonus because of the presence of creatin, but they always pollute the body…

Protein isolate, made of milk, soya, pea or else ; now is the best support for proteins, with a few vitamins and minerals to optimize assimilation. It also provide facilities to repair muscles due to their profile in amino-acids.